Steam boiler



April 17, 192s. 6 1,666,202

K. HAMM STEAM BOILER Filed May 14, 1926 2 Sheets-Sheet 1 I A) ATro NEY April 17, 1928. 1,666,202

K. HAMM STEAM BOILER Ei'l'ed May 14. 192.6

2 Sheets-Sheet 2 INVENTOR lfarl Ha 222 M ATTO NEY Patented Apr. 17, 1928:.

' KARL HAMM; OFL ARTFQRD;'ooianncmcon ESTEAM' BoIIJE-Ba Application; 11161 May, 14

This invention relates to steam; boilers,

and 1 has, for its a obj eat. to provide a steam boiler" having a. maximum heat: radiatmg sur-face 1 and which may be QCOIIOIIllCfilf '5'; 1y operate-difwithrthe use offuel oil or ga s edinto a pluralityi of separate chambers, into' one of Whic-hthe,flanies'eandgasiare in:-- 'itially admitted from theoiL-burner: mount-- 15 ed'in one end ofsaiddrum. A plurality off conducting tubes for thecg as are in com m'unicationr at their j} ends Withadjacent chambersiofbthe drum,- andTextend downwardl'y into; the: Watercontained in-"the-4 iboilenso that in the passage of the hot gases;

successively; through these tubes or conduits I succesivelygi through: the;-: several. chambers,v

V the; heat will Z be radia ted 1 from the- Walls: of saidr'tubesas -W8ll as fromkthe;wal1; oft-the ofiitsie-nds to onezenig Thns rall of the available.- heat contained; in

thegas swilllbefpraotically abstracted-therei-w from and utilized-in the conversion of the-w waterinto: steam: as:

1 xtli'eboilerrto the desired point;

thei above; novel :feat-ures which s is a relatively simple? in: its. construction, ,efiicient. Lin: its

' relative;-arrangementi off the: various parts thereof as will he he1'eina fter more fully dem ib d; illiist'rated =in' the accompanyi Int addition,- I: preferably; provide; an elongated pipe coil .iarranged.= inf thez bottomiofithezboi ler shell aridbonnected l at-.one.-

of the drum and! into which xtheigasesw are. nally emit-ted, said pipe coilx. discharging-into; atsuitable outlet flue-i It is ejaiiother objew ofi the invention :to provide-5 improved means:- for directing; a multiplicityofiwwaterz jets lntSpI'ayffOIHi; upontheupper part of the--heated drum so; that; the; Waterr spray Will be instantlycons 4o. vertedziinto steam: upon. contact with the heated Wal1;0f1 said drnmpthereby expediting: the: increase of; steam pressnre; withjinl, I I

v I i a a plura-litv of substantiallyU shapedftubesi is: also; I further: general object oi the 46 inventiomto: provide-1 a": steam boiler: having:

i926.-. Serial no. 109 055;

thesulrgo'ined claims; a s c In the; drawings, wherein I have illustratg.

ed one simple and practical embodiment it of the invention and in :which similar. reference: i characters desi-gnate corresponding; parts:

throughout;therseveral-views w Eiguretl 1s LEI-d6" elevation of steamg'f boiler-- ienib'odyingfrny ypr nti imp r I ments L E1g; .2 1sa -transverse sectional. VleW "ta-ken;

Fig. is an enlarged longitudinal? secs, tmnalvmwvtaksn substantialy: onwtheline 3'3' ofFig-.2i' c 1 Referring in detail= to, the drawings-m, the? boiler}. shell indicated at 5 is preferably of:

cylindrical for n -andl may be'zof desiredi s I size-and capacity,- the opposite. ends: ofixsaid a shell. being; closed 1 by; the heads 3 6 andg7; ire

spectively;

'Dh e boiler: headi 61 is centrally-provided! V I ;With.;a reducedsaxial zextensionr8vinithe 2form i of acylindricalswall:or tube; toonefend wall of Whielnoneiend; of s the elongated 1 drum? 92:

is permanently; fixedt f This 2 drum; extends. axially-" ithin" the boiler shell 5* to a pointiadj abentathe opposite end thereof and is pro vided with aa plurality of: equidis'tantlyf spaced internal partitionwwa-lls '105 .Th'ese ceivingi'chaimberi 11 at" the forward' end of said; drinng. I a; plurality of intermediate is suitably f mo'untedi I The flame-- and gases 1 initially discharged into the chamb'eril are v95 successivelyiconducted to andj th'rough" the f chambers 12 and finally} int'oj chamber 13 by;

or condnits 'lti disposed in pendent relation to i the druni 9 1i and I having their" open ends in communication with the adjacent cha nberSof-*thedrum. v- 1 In addition 't'o the tubes 'orcondu'its 1 5' 16is' arranged in the boiler and extends sub stanti ally-jthe full 1 length thereoi'i I One end l7 ofthis pipe coil is connected with the outlet chamber 131 while the otherehd} 18 0f 'said coil*extendsthrough:the boilen head f v and 3 opens intof a suitable discharge flue} l9 I 11'0- pa'rtifimuwalls Provideaifiame andfgas ret I The boiler is fill ed with water through a suitable water supply connectlon indicated 7 at 20 until the pendent tubes 15 are entirely submerged, and the water level is substan tially on a line with the axis of thevdrum 9. The flame and the products of combustion entering chamber 11 from the burner .14

pass successively through the depending tubes or conduits 15 and chambers 12, such travel or passageot the gases through these chambers being aided by the induced suction from the outlet tlue 19. The cylindrical wall of the drum 9 thus becomes very highly heated, such heat being transmitted into the surroundingwater so that the latter is con verted into steann Any remaining-heat units contained in the gas is abstracted therefrom in the passage of the gas through'the elongated pipe coil. 16. In this manner, I obtaln a maximum utilization of the heat contained in the burner flame and gases be- I fore the gases are finally discharged into the outlet flue 19. r r For the purpose of expediting the generation of the desired steam pressure in the starting of the boiler operation, I provide the upper portion otsaid boiler with a plurality of water spray nozzles indicated at 21 which are connected with a source of water supply by the pipes 22. Thus at spaced points longitudinally of the boiler, a plurality of spray 3ets of waterin finely divided form are directed radially upon the wall of the drum 9. This drum wall being highly heated, the globules of water uponimpact therewith, will beimmediately converted into steam,

thereby supplementing the volume of steam produced from the water in the lower part of the boiler and rapidly increasing the steam pressure therein. V Preferably, the boiler shell at'its upper side and centrally thereof is provided with a steam ccollectingdome 23 equipped with the usual safety valve indicated at 24: and the outlet pipe connection 25' having a suitable control valve '26 therein and through which the steam may be drawn off and utilized for Various purposes.

' From the foregoing description considered :in connection with the accompanymg draw-.

ings, the construction and manner of operation of my improved steam boiler will; be fully understood. The invention is well adapted for the purpose of household heat- .ing by means of oil and similar liquid fuel,

stood that in its several novel features, the invent-ion might be structurally exemplified in numerous other alternative embodiments, and I therefore, reserve the privilege ofresorting to all such legitimate changes in the form, construction and relative arrangement "of? theiseveral parts as may be fairly incorporated Within the spirit and scope of the appended claimsi I claim: v I V 1. In a steam boiler, a boiler shell, a drum axially positioned therein and provided with a plurality of chambers, a plurality of gas conducting tubes depending from said drum and connecting said chambers with each other, said tubes andlower part ofthedrum adapted to be submerged in water contained in the boiler, means for supplying a fluid heating" medium to one end chamber of said drum; an elongated pipe coil arranged 1n the lower side ofthe boiler beneath said conduits and having one end-thereof connccted with the other end chamber of said j drum and the other end of said coil' discharging the gases externally of the boiler.

2. In a steam boiler, a boiler-shell, a drum" extending axially within said shell, said drum at one of its ends being rigidly supported upon one end of the boiler shell, a

liquid fuel burner mounted in the latterend of said drum, a plurality of spaced internal partitions dividing said drum into a plurality of chambers, conduits connect,

ing the adjacent chambers with each "other and conducting the'burner gases=success1ve'- 1y through said chambers, and a pipe coil connected at .oneof'its ends with the other end chamber of said drum" and through which the gases-are discharged externally of the boiler, said pipe coil, the conduits and" the lower part of said drum adapted to be submerged in water contained'inthe boiler shell. 1

3. In'a steam boiler, a boiler shell, a drum axially positioned therein and provided-With a plurality of chambers, a plurality of'g'as;

conducting tubesdependin'g from said drum and connecting said chamberswithf each 7 other, said tubes and lower partot the'drum" adapted to be submerged in-water contained in the boiler, means for-supplying a fluid heating medium {to one end chamber of said 7 drum, meansfor discharging the gases and- 7 products of combustion from the same at the opposite end of said drum, and a plu rality of water spray nozzles mounted in the upper side of the boilershellfor directing a series of spray jets of water upon the upper part of the drum'wall.

4. Ina steam boiler, a boiler shell, a-drum axiallypositioned therein and providedwith a plurality of chambers, a plurality of gas conducting tubes depending from said drumand connecting said, chambers with each other, said tubes and lower, partof the drum adapted to be submerged'in water contained in the boiler, means for supplying a fluid heating medium to one end chamber-of said duits-and' having one .end thereof connected 1 V the other endrof said coil discharging the drum, an elongated pipecoilarranged in the lower side of the boiler beneath said c0n- WltlhtllGOtllGI end chamber of said drum,

gases externallyof the boiler, and a plurality of Water'spray nozzles mounted in the upper sideof the boiler shell for directinga series of spray jets of Water upon the upper part ofthe'drum Wall.

-5.- In asteam boiler, a boiler shell, a plurality of chambers serially arranged in the shell away from the Walls thereof, a plurality of gas conducting tubes depending fromsaid chambers and'connecting each succeeding chamber, means for supplying a fluid heating medium to a. burner located in one chamber, means for discharging the gases. and products of combustion from the chamber at the oppositeend of the shell,

, and means for spraying Water. upon the upper sidev of said chambers.

6. In a steam boiler, a boiler shell, aplurality of chambers serially arranged in the shellin horizontal 'alinement and spaced from the Wall thereof, a plurality of gas conducting tubes depending from said cham bers andfconnecting the succeeeding chamber and submerged in the Water contalned in the boiler, means for supplying a fluid heating medium to a burner located in one end-chamber, and means for discharging the gas and products of combustion from the chamber at the opposite end of the shell,

ends'of the chambers. 7

7. In a 'steam boiler, a boiler shell, a series of chambers arranged axially Within "the shell and partly submerged in the Water thereof, a plurality of gasvconductingtubes means for discharging the gas and products of combustion from the chambers at the opposite end of the shell, and a coilconnected to the discharge and arranged below the depending tubes and extending out through the shell. 7 f Q 8. In a steam boiler, a boiler shell,-a plurality of chambers arrangedserially'within means for spraying Water upon theupper said shell in axial alignmentfdepending, tubes connectingsaid chambers, a fluidsupply heating medium for one end chamber, means for-discharging the gases and fproducts ofcombustion from'theother end chamber, and a coil connected tothe discharge and arranged in the shell below thedepend '7 ing tubes.

In testimony that I claim the-foregoingas my invention, I have signed my name hereto.

KARL HAMM. 

